| 高抗干扰性的多普勒频率测量系统 |
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| 引用本文： | 朱惠英,刘兴春.高抗干扰性的多普勒频率测量系统[J].北京航空航天大学学报,1996,22(4):500-503. |
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| 作者姓名： | 朱惠英 刘兴春 |
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| 作者单位： | [1]北京航空航天大学 [2]北京航空航天大学工程系 |
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| 摘 要： | 提供一种在噪声背景下可靠测量多普勒频谱信号中心频率值的方法，将锁相理论应用于干扰情况下的多普勒频率测量系统，利用跟踪搜索转换电路，实现了在窄频带内跟踪，宽频带内搜索，使系统具有抗干扰能力强，灵敏度高等优点。实验表明，当系统跟踪多普勒频率信号后，对较强的邻频干扰信号，不产生错误跟踪。
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| 关 键 词： | 多普勒频移 频率计量 跟踪 锁相环 |
MEASURING SYSTEM OF DOPPLE FREQUENCY WITH HIGH RESISTANCE |
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| Zhu Huiying.MEASURING SYSTEM OF DOPPLE FREQUENCY WITH HIGH RESISTANCE[J].Journal of Beijing University of Aeronautics and Astronautics,1996,22(4):500-503. |
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| Authors: | Zhu Huiying |
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| Abstract: | A reliable method to measure was provided,the central frequency volue of the Doppler frequency signal in the noise background.The phase lock theory will be applied to the Dopple frequency measuring system.By using the trace and search switching circuit,the system is able to trace within the narrow frequency band range and search within the wide frequency band range.Thus,the system features high sensitivity and strong resistance to interference. The experiments have proved that when the system follows the signal of Doppler frequency,it will not follow incorrectly the strong interference signal of adjacent frequency modulation. |
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| Keywords: | Doppler shift frequency measurement tracking phase locked loops |
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